package com.kwq.gaoji;
//测试生产者消费者问题2：信号灯法，标志位解决
public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new player(tv).start();
        new Watcher(tv).start();

    }
}

//生产者-->演员
class player extends Thread{
    TV tv;
    public player(TV tv){
        this.tv=tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i%2==0){
                this.tv.play("快乐大本营播放中");
            }else{
                this.tv.play("抖音：记录美好生活");
            }
        }
    }
}

//消费者-->观众
class Watcher extends Thread{
    TV tv;
    public Watcher(TV tv){
        this.tv=tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}

//产品-->节目
class TV{
    //演员表演，观众等待  T
    //观众观看，演员等待  F
    String voice; //表演的节目
    boolean flag=true;

    //表演
    public synchronized void play(String voice){
        if (!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        System.out.println("演员表演了:"+voice);

        //通知观众观看
        this.notifyAll(); //通知唤醒
        this.voice=voice;
        this.flag=!this.flag;
    }
    //观看
    public synchronized void watch(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了:"+voice);
        //通知演员表演
        this.notifyAll();
        this.flag=!this.flag;

    }
}
